Influence of Compressive Stress on Dielectric and Ferroelectric Properties of the Na0.5K0.5NbO3, Na0.5K0.5(Nb0.94Sb0.06)O3 and Na0.5K0.5(Nb0.94Sb0.06)O3+0.5mol% MnO2 Ceramics

被引：1
|
作者：
Suchanicz, J. [1 ]
Faszczowy, I. [1 ]
Klimkowski, G. [1 ]
Lewczuk, U. [1 ]
Karpierz, M. [1 ]
Sternberg, A. [2 ]
机构：
[1] Pedag Univ, Inst Phys, PL-30084 Krakow, Poland
[2] Univ Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia
来源：
FERROELECTRICS | 2013年 / 455卷 / 01期
关键词：
NKN ceramics; compressive stress; dielectric and ferroelectric properties;
D O I：
10.1080/00150193.2013.845498
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Good quality lead-free ceramics of Na0.5K0.5NbO3, Na0.5K0.5(Nb0.94Sb0.06)O-3 and Na0.5K0.5(Nb0.94Sb0.06)O-3 +0.5mol%MnO2 have been produced by a solid phase hot pressing sintering process at 1120-1145 degrees C. The dependence of dielectric and ferroelectric properties on the uniaxial pressure (0-3000 bar) of the these samples was investigated, revealing a significant influence of the external stress on their properties. This includes a shift of the phase transition, a diffuseness of the permittivity characteristics, a change of the dielectric dispersion and a decrease of the polarization. We discuss our results based on hardening of the soft-mode and domain switching processes under applying of pressure.
引用
收藏
页码：136 / 141
页数：6
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